WO2017004108A1 - Polymères superabsorbants et poudres d'amidon utilisables dans des compositions de soins de la peau - Google Patents

Polymères superabsorbants et poudres d'amidon utilisables dans des compositions de soins de la peau Download PDF

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Publication number
WO2017004108A1
WO2017004108A1 PCT/US2016/039934 US2016039934W WO2017004108A1 WO 2017004108 A1 WO2017004108 A1 WO 2017004108A1 US 2016039934 W US2016039934 W US 2016039934W WO 2017004108 A1 WO2017004108 A1 WO 2017004108A1
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WIPO (PCT)
Prior art keywords
composition
weight
starch
oil
particles
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PCT/US2016/039934
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English (en)
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Paul Robert Tanner
Mridula MANOHAR
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The Procter & Gamble Company
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Priority to JP2017567085A priority Critical patent/JP6604637B2/ja
Priority to EP16736726.7A priority patent/EP3313534A1/fr
Priority to CN201680036787.4A priority patent/CN107787222B/zh
Priority to CA2988808A priority patent/CA2988808C/fr
Priority to KR1020177036476A priority patent/KR102043535B1/ko
Publication of WO2017004108A1 publication Critical patent/WO2017004108A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/06—Emulsions
    • A61K8/062—Oil-in-water emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/732—Starch; Amylose; Amylopectin; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8147—Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q15/00—Anti-perspirants or body deodorants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/007—Preparations for dry skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/04—Preparations for care of the skin for chemically tanning the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/06—Preparations for care of the skin for countering cellulitis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/08—Anti-ageing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/006—Antidandruff preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/48—Thickener, Thickening system

Definitions

  • the present invention relates to the combination of superabsorbent polymers and high levels of waxes and powder particulates, e.g. starch powders, for use in improving the look, feel and stability of skin care products.
  • Personal care products are well known and widely used. These products have long been employed to protect, cleanse and moisturize, deliver actives, hide imperfections and reduce the oiliness and shine on keratinous surfaces.
  • a variety of personal-care compositions are available to provide skin care benefits and to help prevent and even counteract what many consumers consider to be undesirable signs of skin aging such as fine lines, wrinkles, and uneven skin texture. The look and feel of the compositions are also important to consumers.
  • butters possess attributes that are different from traditional solids and liquids in that they are solid when applied but may liquefy under pressure.
  • Body butter products typically consist of oil-in-water emulsions that contain butters and other waxy materials. The waxy materials give these products a more solid-like consistency than most traditional skin care moisturizer products.
  • the formulations appear to melt into the skin as they are applied. Thus consumers like these butter products since they look rich and creamy. However, after they are applied to the skin these butter products, having waxy materials, may look shiny or may feel sticky, greasy, or heavy.
  • compositions comprise alternative superabsorbent polymers thickeners.
  • superabsorbent polymer thickeners further enhance the skin feel during application. Specifically these products provide better spreading during application, less stickiness, and a less oily or greasy look and feel.
  • the present invention relates to a skin care composition
  • a skin care composition comprising:
  • an oil phase mixture comprising from about 5% to about 30% by weight of the composition, of a wax material; and optionally from about 1% to about 20% by weight of the composition, of an oil that is liquid at room temperature; the oil phase mixture having a melting point of about 25°C to about 50°C;
  • a water phase comprising from about 0.1% to about 5%, by weight of the composition, of a superabsorbent polymer; and from about 20% to about 85% by weight of the composition of water;
  • composition from about 6% to about 30%, by weight of the composition, of particulate material selected from the group consisting of starch particles, silicone elastomer particles and combinations thereof; wherein the composition is an oil in water emulsion.
  • the present invention further relates to a skin care composition
  • a skin care composition comprising: an oil phase mixture comprising from about 5% to about 30% by weight of the composition, of a wax material; and from about 1% to about 20% by weight of the composition, of an oil that is liquid at room temperature; the oil phase mixture having a melting point of about 25°C to about 50°C; a water phase comprising from about 0.1% to about 5%, by weight of the composition, of a superabsorbent polymer; and from about 20% to about 80% by weight of the composition, of water; and
  • composition from about 8% to about 25%, by weight of the composition, of non-crosslinked starch particles; wherein the composition is an oil in water emulsion; the composition has a viscosity at 25°C of about 100,000cP to about 2,000,000cP; and wherein the ratio of wax material to oil is from about 2: 1 to about 20: 1.
  • compositions of the present invention can comprise, consist essentially of, or consist of, the essential components as well as optional ingredients described herein.
  • “consisting essentially of” means that the composition or component may include additional ingredients, but only if the additional ingredients do not materially alter the basic and novel characteristics of the claimed compositions or methods.
  • Apply or “application,” as used in reference to a composition, means to apply or spread the compositions of the present invention onto keratinous tissue such as the epidermis.
  • Keratinous tissue refers to keratin-containing layers disposed as the outermost protective covering of mammals (e.g. , humans, dogs, cats, etc.) which includes, but is not limited to, skin, lips, hair, toenails, fingernails, cuticles, hooves, etc.
  • Disposologically acceptable means that the compositions or components described are suitable for use in contact with human skin tissue without undue toxicity, incompatibility, instability, allergic response, and the like. "Safe and effective amount” means an amount of a compound or composition sufficient to significantly induce a positive benefit.
  • Non-UV means a material not recognized by a skilled artisan in the field of sunscreen formulation to be a dermatologically acceptable UV active absorbing material.
  • UV active means a material recognized by a skilled artisan in the field of sunscreen formulation to be a dermatologically acceptable UV active absorbing material. Such UV actives may be described as being UV-A and/or UV-B active agents. Approval by a regulatory agency is generally required for inclusion of active agents in formulations intended for human use. Those active agents which have been or are currently (per 21 C.F.R. part 352) approved by the U.S.
  • Food and Drug Administration as acceptable for use in over-the counter sunscreen drug products include organic and inorganic substances including, without limitation, para aminobenzoic acid, avobenzone, cinoxate, dioxybenzone, homosalate, menthyl anthranilate, octyl salicylate, oxybenzone, padimate O, phenylbenzimidazole sulfonic acid, sulisobenzone, trolamine salicylate, titanium dioxide, zinc oxide, diethanolamine methoxycinnamate, digalloy trioleate, ethyl dihydroxypropyl PABA, glyceryl aminobenzoate, lawsone with dihydroxyacetone, red petrolatum.
  • organic and inorganic substances including, without limitation, para aminobenzoic acid, avobenzone, cinoxate, dioxybenzone, homosalate, menthyl anthranilate, octyl salicylate, oxybenzone, padimate O, phenyl
  • sunscreen actives examples include ethylhexyl triazone, dioctyl butamido triazone, benzylidene malonate polysiloxane, terephthalylidene dicamphor sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, diethylamino hydroxybenzoyl hexyl benzoate, bis diethylamino hydroxybenzoyl benzoate, bis benzoxazoylphenyl ethylhexylimino triazine, drometrizole trisiloxane, methylene bis-benzotriazolyl tetramethylbutylphenol, and bis- ethylhexyloxyphenol meth
  • Leave-on in reference to compositions, means compositions intended to be applied to and allowed to remain on the keratinous tissue. These leave-on compositions are to be distinguished from compositions which are applied to the skin and subsequently (in a few minutes or less) removed either by washing, rinsing, wiping, or the like. Leave-on compositions exclude rinse-off applications such as shampoos, facial cleansers, hand cleansers, body wash, or body cleansers. The leave-on compositions may be substantially free of cleansing or detersive surfactants. For example, "leave-on compositions" may be left on the keratinous tissue for at least 15 minutes.
  • leave-on compositions may comprise less than 1% detersive surfactants, less than 0.5% detersive surfactants, or 0% detersive surfactants.
  • the compositions may, however, contain emulsifying or other processing surfactants that are not intended to provide any significant cleansing benefits when applied topically to the skin.
  • Derivatives means an ester, ether, amide, hydroxy, and/or salt structural analogue of the relevant compound.
  • Soluble means at least about 0.1 g of solute dissolves in 100 ml of solvent, at 25 °C and 1 atm of pressure.
  • the thickened aqueous phase of this invention may be combined with, or emulsified with an oil phase mixture to form an emulsion such as an oil-in-water emulsion.
  • the composition may comprise an oil phase mixture having from about 5% to about 30% by weight of the composition of a wax material, optionally an oil that is liquid at room temperature; the oil phase mixture having a melting point of about 25°C to about 50°C, preferably from about 27°C to about 45°C, or from about 28°C to about 40°C.
  • the oil phase mixture may comprise from about 5% to about 30% by weight of the composition of a wax material; from about 1% to about 20% of an oil that is liquid at room temperature, the oil phase mixture having a melting point of about 25°C to about 50°C, preferably from about 27°C to about 45°C, or from about 28°C to about 40°C.
  • the total oil phase mixture comprises from about 6% to about 40%, by weight of the composition, more preferably from about 8% to about 30%, or about 10% to about 20%, by weight of the composition.
  • wax materials give these compositions a thicker, more solid-like consistency than most traditional skin care moisturizer products.
  • the wax materials are combined with oily liquids so that the resulting oil phase mixture has a melting point so that the formulations appear to melt into the skin as they are applied.
  • the wax material herein is a lipophilic ingredient that is solid or semi-solid at room temperature, and has a melting point of 25°C to 80°C, preferably from 30°C to 65°C.
  • the level of wax is from 5% to 30%, preferably 6% to 25%, more preferably 8% to 22%, more preferably from 10% to 20% by weight of the composition.
  • Suitable wax materials include natural and synthetic materials, and include a variety of chemistries such as hydrocarbon waxes, ester waxes, alcohol waxes, silicone waxes, and mixtures thereof.
  • Hydrocarbon waxes consist of only carbon and hydrogen atoms, and include for example polyethylene waxes, paraffin waxes, microcrystalline waxes, ceresin wax, ozokerite, and mixtures thereof.
  • Another suitable example of hydrocarbon wax is Cirebelle 303, a synthetic hydrocarbon wax from Arch Personal Care Products.
  • Ester waxes are wax materials that contain at least one ester group.
  • Suitable examples of naturally derived ester waxes include waxes obtained from the hydrogenation of oils from plant or animal sources, such as hydrogenated coconut oil, hydrogenated castor oil, hydrogenated olive oil, hydrogenated jojoba oil, and hydrogenated sunflower oil. Additional naturally derived ester waxes include beeswax, candelilla wax, carnauba wax, japan wax, montan wax, shea butter, cocoa butter, mango butter, and mixtures thereof.
  • Suitable examples of synthetic ester waxes include cetyl palmitate, cetyl stearate, pentaerythrityl distearate, and mixtures thereof.
  • Alcohol waxes are wax materials that contain at least one alcohol group. Suitable examples of alcohol waxes include myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof.
  • Silicone waxes are wax materials that contain at least one silicon atom.
  • suitable silicone waxes include the ABIL Wax series of alkyl silicones from Evonik, including for ABIL Wax 2434 (stearoxy dimethicone), ABIL Wax 2440 (behenoxy dimethicone), and ABIL Wax 9810P (C24-28 alkyl dimethicone).
  • silicone waxes include Dow Corning 2503 Wax (stearyl dimethicone and octadecene) from Dow Corning, Dow Corning SW-8005 C30 Resin Wax (C30-45 alkyldimethylsilyl polypropylsilsesquioxane) from Dow Corning, and Dow Corning 580 Wax (Stearoxy trimethylsilane and stearyl alcohol).
  • Preferred wax materials include silicone waxes, alcohol waxes, and ester waxes, and mixtures thereof.
  • Especially preferred wax materials include the silicone waxes, alcohol waxes, and mixtures thereof.
  • compositions herein may comprise from about 1% to about 20%, preferably 1% to 15%, more preferably from 2% to 8% by weight of the composition, of an oil that is liquid at room temperature. Oils may be used to solubilize, disperse, or carry materials that are not suitable for water or water soluble solvents.
  • the oils may be volatile or nonvolatile.
  • “Non-volatile” means a material that exhibit a vapor pressure of no more than about 0.2 mm Hg at 25°C at one atmosphere and/or a material that has a boiling point at one atmosphere of at least about 300°C.
  • “Volatile” means that the material exhibits a vapor pressure of at least about 0.2 mm of mercury at 20°C. Volatile oils may be used to provide a lighter feel when a heavy, greasy film is undesirable. Suitable oils include hydrocarbons, esters, amides, ethers, silicones, and mixtures thereof.
  • Suitable hydrocarbon oils include straight, branched, or cyclic alkanes and alkenes.
  • the chain length may be selected based on desired functional characteristics such as volatility.
  • Suitable volatile hydrocarbons may have between 5-20 carbon atoms or, alternately, between 8-16 carbon atoms.
  • esters include esters with hydrocarbyl chains derived from fatty acids or alcohols (e.g., mono-esters, polyhydric alcohol esters, and di- and tri- carboxylic acid esters).
  • the hydrocarbyl radicals of the esters hereof may include or have covalently bonded thereto other compatible functionalities, such as amides and alkoxy moieties (e.g., ethoxy or ether linkages, etc.).
  • esters include, but are not limited to, isopropyl isostearate, hexyl laurate, isohexyl laurate, isohexyl palmitate, isopropyl palmitate, decyl oleate, isodecyl oleate, hexadecyl stearate, decyl stearate, isopropyl isostearate, dihexyldecyl adipate, lauryl lactate, myristyl lactate, cetyl lactate, oleyl stearate, oleyl oleate, oleyl myristate, lauryl acetate, cetyl propionate, C12-15 alkyl benzoate, butyloctyl salicylate, phenylethyl benzoate, dicaprylyl carbonate, dioctyl malate, dicaprylyl maleate, isononyl isononanoate, propy
  • esters are further described in the Personal Care Product Council's International Cosmetic Ingredient Dictionary and Handbook, Thirteenth Edition, 2010, under the functional category of "Esters”.
  • esters suitable for use in the personal care composition include those known as polyhydric alcohol esters and glycerides.
  • Suitable oils include amides.
  • Amides include compounds having an amide functional group while being liquid at 25°C and insoluble in water.
  • Suitable amides include, but are not limited to, N-acetyl-N-butylaminopropionate, isopropyl N-lauroylsarcosinate, butylphthalimide, isopropylphthalimide, and ⁇ , ⁇ ,-diethyltoluamide.
  • Other suitable amides are disclosed in U.S. Patent No. 6,872,401.
  • Other suitable oils include ethers. Suitable ethers include saturated and unsaturated fatty ethers of a polyhydric alcohol, and alkoxylated derivatives thereof.
  • Exemplary ethers include, but are not limited to, C 4 _2o alkyl ethers of polypropylene glycols, and di-C 8 _ 3 o alkyl ethers. Suitable examples of these materials include PPG-14 butyl ether, PPG-15 stearyl ether, PPG-11 stearyl ether, dioctyl ether, dodecyl octyl ether, and mixtures thereof.
  • Suitable silicone oils include polysiloxanes.
  • Polysiloxanes may have a viscosity of from about 0.5 to about 1,000,000 centistokes at 25°C.
  • Such polysiloxanes can be represented by the general chemical formula:
  • R is independently selected from hydrogen or Ci_ 3 o straight or branched chain, saturated or unsaturated alkyl, phenyl or aryl, trialkylsiloxy; and x is an integer from 0 to about 10,000, chosen to achieve the desired molecular weight.
  • R is hydrogen, methyl, or ethyl.
  • Commercially available polysiloxanes include the polydimethylsiloxanes, which are also known as dimethicones, examples of which include the DM-Fluid series from Shin-Etsu, the Vicasil ® series sold by Momentive Performance Materials Inc., and the Dow Corning ® 200 series sold by Dow Corning Corporation.
  • suitable polydimethylsiloxanes include Dow Corning ® 200 fluids (also sold as Xiameter ® PMX-200 Silicone Fluids) having viscosities of 0.65, 1.5, 50, 100, 350, 10,000, 12,500 100,000, and 300,000 centistokes.
  • Suitable dimethicones include those represented by the chemical formula:
  • R and R are each independently hydrogen or C 1-3 o straight or branched chain, saturated or unsaturated alkyl, aryl, or trialkylsiloxy; and x and y are each integers of 1 to 1,000,000 selected to achieve the desired molecular weight.
  • Suitable silicones include phenyl dimethicone (BotansilTM PD-151 from Botanigenics, Inc.), diphenyl dimethicone (KF-53 and KF-54 from Shin-Etsu), phenyl trimethicone (556 Cosmetic Grade Fluid from Dow Corning), or trimethylsiloxyphenyl dimethicone (PDM-20, PDM-200, or PDM-1000 from Wacker-Belsil).
  • alkyl dimethicones wherein at least R' is a fatty alkyl (e.g. , Cn-ii).
  • a suitable alkyl dimethicone is cetyl dimethicone, wherein R' is a straight C16 chain and R is methyl. Cetyl dimethicone, is available as s 2502 Cosmetic Fluid from Dow Corning or as Abil Wax 9801 or 9814 from Evonik Goldschmidt GmbH.
  • Cyclic silicones are one type of silicone oil that may be used in the composition. Such silicones have the general formula:
  • a mixture of cyclomethicones is used where n is 4, 5, and/or 6.
  • the ratio of wax material to oil is from about 2: 1 to about 20: 1, preferably from about 3: 1 to about 10: 1.
  • the skin care composition further comprises a water phase comprising: from about 0.1% to about 5%, by weight, of a superabsorbent polymer, preferably from about 0.2% to about 3% or from about 0.4% to about 1.5% by weight of the composition, and from about 20% to about 85%, by weight of the composition, of water wherein the composition is an emulsion such as an oil in water emulsion.
  • the superabsorbent polymer can be present in the composition of the invention ranging, for example, from 0.1% to 5% by weight, preferably from 0.2% to 3% by weight, preferably from 0.4% to 1.5% by weight with respect to the total weight of the composition.
  • These polymers have a high capacity for absorbing and retaining water and aqueous fluids. After absorption of the aqueous liquid, the particles of the polymer thus impregnated with aqueous fluid remain insoluble in the aqueous fluid and thus retain their separated particulate state.
  • the term "superabsorbent polymer” is understood to mean a polymer which is capable, in its dry state, of spontaneously absorbing at least 20 times its own weight of aqueous fluid, in particular of water and especially of distilled water.
  • Such superabsorbent polymers are described in the work "Absorbent Polymer Technology, Studies in Polymer Science 8" by L. Brannon-Pappas and R. Harland, published by Elsevier, 1990.
  • the superabsorbent polymer can have a water-absorbing capacity ranging from 20 to 2000 times its own weight (i.e., 20 g to 2000 g of water absorbed per gram of superabsorbent polymer), preferably from 30 to 1500 times and alternatively ranging from 50 to 1000 times. These water- absorbing characteristics are defined at standard temperature (25°C) and pressure (760 mm Hg, i.e. 100 000 Pa) conditions and for distilled water.
  • the value of the water-absorbing capacity of a polymer can be determined for example by dispersing 0.5 g of polymer(s) in 150 g of a water solution, by waiting 20 minutes, by filtering the nonabsorbed solution through a 150 ⁇ filter for 20 minutes and by weighing the nonabsorbed water.
  • Superabsorbent polymers are commonly made from the polymerization of acrylic acid blended with sodium hydroxide in the presence of an initiator to form a poly-acrylic acid sodium salt (sometimes referred to as sodium polyacrylate). This polymer is the most common type of superabsorbent polymers made in the world today. Other materials are also used to make a superabsorbent polymer, such as polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethylcellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer of polyacrylonitrile to name a few. The latter is one of the oldest superabsorbent polymers forms created. Today superabsorbent polymers are made using one of three primary methods; gel polymerization, suspension polymerization or solution polymerization.
  • Gel Polymerization involves a mixture of frozen acrylic acid, water, cross-linking agents and
  • UV initiator chemicals are blended and placed either on a moving belt or in large tubs.
  • the liquid mixture then goes into a "reactor” which is a long chamber with a series of strong UV lights.
  • the UV radiation drives the polymerization and cross-linking reactions.
  • the resulting "logs" are sticky gels containing 60-70% water.
  • the logs are shredded or ground and placed in various sorts of driers.
  • Additional cross-linking agent may be sprayed on the particles' surface; this "surface cross -linking" increases the product's ability to swell under pressure— a property measured as Absorbency Under Load (AUL) or Absorbency against Pressure (AAP).
  • AUL Absorbency Under Load
  • AAP Absorbency against Pressure
  • the dried polymer particles are then screened for proper particle size distribution and packaging.
  • the Gel Polymerization (GP) method is currently the most popular method for making the sodium polyacrylate superabsorbent polymers now used in baby diapers and other
  • Solution polymers those made by solution polymerization, offer the absorbency of a granular polymer supplied in solution form. Solutions can be diluted with water prior to application. Solutions can coat most substrates or be used to saturate the substrates. After drying at a specific temperature for a specific time, the result is a coated substrate with superabsorbent functionality.
  • this chemistry can be applied directly onto wires & cables, though it is especially optimized for use on components such as rolled goods or sheeted substrates.
  • Solution based polymerization is commonly used today for SAP (superabsorbent polymer) manufacture of co-polymers, particularly those with the toxic acrylamide monomer. This process is efficient and generally has a lower capital cost base.
  • SAP superabsorbent polymer
  • the solution process uses a water based monomer solution to produce a mass of reactant polymerized gel.
  • the polymerization's own reaction energy is used to drive much of the process, helping reduce manufacturing cost.
  • the reactant polymer gel is then chopped, dried and ground to its final granule size. Any treatments to enhance performance characteristics of the SAP are usually accomplished after the final granule size is created.
  • Superabsorbent polymers can also be made by suspension polymerization. This process suspends the water-based reactant in a hydrocarbon-based solvent. The net result is that the suspension polymerization creates the primary polymer particle in the reactor rather than mechanically in post-reaction stages. Performance enhancements can also be made during, or just after, the reaction stage.
  • the superabsorbent polymer used in the composition of the invention is preferably provided in the form of particles which, once hydrated, swell with the formation of soft particles having a weight- average diameter of ⁇ to 300 ⁇ , in another embodiment from 20 ⁇ to 200 ⁇ and in another embodiment from about 40 ⁇ to 150 ⁇ . These particles sizes relate to the primary particles.
  • the superabsorbent polymer in its non-swollen (dry) state, exhibits a weight- average particle size of from 2 ⁇ to ⁇ , preferably from 4 ⁇ to 50 ⁇ , or from 5 ⁇ to 30 ⁇ , and/or from ⁇ to 20 ⁇ . These particles sizes relate to the primary particles.
  • the superabsorbent polymer can, for instance, be spherical shaped, such as substantially spherical or true spheres or irregularly shaped.
  • the superabsorbent polymer is irregularly shaped (e.g. such as may be produced by a grinding or milling process).
  • the superabsorbent polymers used in the present invention are preferably crosslinked acrylic homo- or copolymers and derivatives which are preferably neutralized and which are provided in the particulate form. Mention may in particular be made of the polymers chosen from: crosslinked sodium polyacrylates, such as, for example, those sold under the names Octacare X100, XI 10 and RM100 by Avecia, those sold under the names Flocare GB300 and Flosorb 500 by SNF, those sold under the names Luquasorb 1003, Luquasorb 1010, Luquasorb 1280 and Luquasorb 1100 by BASF, those sold under the names Water Lock G400 and G430 (INCI name: Acrylamide/Sodium Acrylate Copolymer) by Grain Processing, or Aqua Keep 10 SH NF, Aqua Keep 10 SH NFC, sodium acrylate crosspolymer-2, provided by Sumitomo Seika, starches grafted by an acrylic polymer (homopolymer or copolymer) and in particular by sodium polyacrylate, such as those sold under
  • superabsorbent polymers include starch grafted polymer or copolymers such as sodium polyacrylate starch; sodium carboxymethyl starch; hydrolysed starches grafted by an acrylic polymer or copolymer such as acryloacrylamide/sodium acrylate copolymer; starch/acrylates/acrylamide copolymer; and combinations thereof.
  • the superabsorbent polymer is sodium polyacrylate starch.
  • Preferred superabsorbent polymers include Makimousse 12 and Makimouse 25 supplied by Kobo Products Inc.
  • the skin care composition also comprises from about 6% to about 30%, by weight, alternatively from about 8% to about 25%, and alternatively from about 10% to about 16%, by weight of the composition of particulate material selected from the group consisting of starch particles, silicone elastomer particles and combinations thereof.
  • particulate material selected from the group consisting of starch particles, silicone elastomer particles and combinations thereof.
  • These particulates can, for instance, be spherical (e.g. substantially spherical), or irregularly shaped; surface coated or uncoated; porous or non-porous; charged or uncharged; and can be added to the current compositions as a powder or as a pre-dispersion.
  • the particulate material provides a light diffusing effect that provides a smooth look to the skin that is often more natural looking than makeup.
  • the particulate material may provide a silky or lubricious feel that can offset the undesirable greasiness associated with oils and/or the undesirable tacky feel associated with some humectants. It is important for the composition to include suitable levels of particles. If too much particulate material is present, then the look and feel benefits provided herein may level off or even start to decline.
  • the powder particulates may no longer remain evenly distributed on the skin surface, which can lead to undesirable whitening (e.g., because particulate no longer remain wetted) and/or flaking from the skin (e.g., because the particulates no longer suitably adhere to the rest of the product film).
  • undesirable whitening e.g., because particulate no longer remain wetted
  • flaking e.g., because the particulates no longer suitably adhere to the rest of the product film.
  • the undesirable look and/or feel properties of the skin care composition may not be altered as desired.
  • the size of the particles is also important for delivering visible texture benefits on skin.
  • the particles are large enough to protrude from the dry film formed by the skin care product on the skin (i.e., at least a portion of each (or most) of the particle(s) extends out of the surface of the film).
  • a "rough" film is created, which diffusely reflects light (i.e., creates a bumpy-looking surface) and reduces the surface area of the underlying skin care product film that can be contacted by a user's hand or other object (i.e., reduces the tacky and/or greasy feel of the skin care composition, etc.).
  • the number of particles in the composition decreases.
  • the number of particles per unit volume is proportional to the inverse of the cube of the particle diameter.
  • using relatively large particles at a fixed amount (i.e., weight percent) in the product effectively reduces the number of particles that can be added.
  • using smaller particles may increase the number of particles present in the composition, but may not provide the desired "rough surface" to the product film because a smaller portion of each particle (or even no portion of the particle) extends above the surface of the product film.
  • the dry film thickness of a conventional skin care product when used as intended, typically ranges between 1 and 6 microns. Consequently, it is important to ensure that the selected particle size is appropriate for the skin care product.
  • Particle sizes herein can be determined by any suitable method known in the art, such as by using coulter-counter equipment or the ASTM Designation E20-85, titled "Standard Practice for Particle Size Analysis of Particulate Substances in the Range of 0.2 to 75 Micrometers by Optical Microscopy," ASTM Volume 14.02, 1993. These particle sizes are weight average particle sizes.
  • spherical particles may substantially spherical (i.e., the majority or even all the particles in the composition are spherical). It is believed, without being limited by theory, that spherical particles generally provide a more suitable product feel relative to non-spherical particles, at least in part because a spherical particle creates less drag and rolls more smoothly across a surface than a non- spherical particle.
  • spherical and sphere mean particles that have an aspect ratio (i.e., ratio of major axis to minor axis) of from 1: 1 to 2: 1, (e.g., 1: 1 to 2: 1, 1: 1 to 1.6: 1 or even 1: 1 to 1.4: 1).
  • the shape of the particles may be determined by any suitable method known in the art (e.g., optical microscope or electron microscope and suitable image analysis software).
  • the composition comprises silicone elastomer particles that are preferably spherical (e.g. substantially spherical) silicone elastomer particles.
  • the composition may include from 6% to 30% by weight of the composition of spherical silicone elastomer particles (e.g., from 8% to 25% or even 10% to 16%).
  • the amount of silicone elastomer powder particle is determined based on the particulate material being in neat form (i.e., not swollen in solvent).
  • spherical silicone elastomer particles that have no tackiness and a rubber hardness (as measured by Durometer A defined in JIS K 6253) in the range of 10 to 90, (e.g., 20 to 80 or even from 25 to 75).
  • a rubber hardness measured by Durometer A defined in JIS K 6253
  • the rubber hardness is less than 5
  • the resulting silicone particles tend to become agglomerated, and dispersion into primary particles can be difficult.
  • a rubber hardness in excess of 90 may invite loss of soft texture that undesirably affects the feel properties provided by the finisher.
  • the spherical silicone elastomer particles herein may have a weight average particle size of from 1 ⁇ to 40 ⁇ , (e.g., from 2 ⁇ to 30 ⁇ or even from 5 ⁇ to 15 ⁇ ).
  • a weight average particle size of from 1 ⁇ to 40 ⁇ , (e.g., from 2 ⁇ to 30 ⁇ or even from 5 ⁇ to 15 ⁇ ).
  • the particle sizes disclosed herein may be readily adapted for use with thicker or thinner films without departing from the spirit and scope of the present invention.
  • Silicone elastomer particles suitable for use herein may be prepared from a variety of silicone materials, e.g., organopolysiloxanes such as cured silicone rubbers and poly(organosilsesquioxane) resins.
  • the silicone elastomer particles suitable herein may be coated or uncoated.
  • the silicone particles may include silicone resin-coated silicone rubber particles (e.g., silicone rubber particles with polyorganosilsesquioxane attached to their surface).
  • Commercially available silicone particles suitable for use in the present invention include: KSP-100, -101, -102, -103, -104, and - 105, all from Shin Etsu; and DC9506 and DC 9701 from Dow Corning.
  • One non-limiting example of useful silicone elastomers is crosslinked organopolysiloxane (or siloxane) elastomers, as described in U.S. patent publication 2003/0049212A1.
  • Silicone elastomer particles suitable for the present invention may be surface treated or coated, and silicone resin-coated silicone rubber particles are preferred.
  • the present composition may include from 6% to 30%, by weight of the composition, or 8% to 25% by weight, of starch particles, preferably spherical starch particles (or preferably from 10% to 16%).
  • starch particles suitable for use herein may be coated or uncoated (e.g., coated with a suitable silicone material).
  • the starch particles may be a coated or uncoated starch derivative.
  • the particulate starch material is hydrophobically coated.
  • the starch particles herein may have a weight average particle size of from 1 ⁇ to 40 ⁇ , (e.g., from 2 ⁇ to 30 ⁇ or even from 5 ⁇ to 30 ⁇ or from 5 ⁇ to 25 ⁇ ).
  • Particle size can be determined by any suitable method known in the art, such as by using coulter- counter equipment or the ASTM Designation E20-85, titled "Standard Practice for Particle Size Analysis of Particulate Substances in the Range of 0.2 to 75 Micrometers by Optical Microscopy," ASTM Volume 14.02, 1993.
  • starch particles suitable for use herein are tapioca starch (available as Tapioca Pure from AkzoNobel), corn starch (available as Purity 21C from AkzoNobel), potato starch, glyceryl starch (available as Dry-Flo GS from AkzoNobel), aluminum starch octenylsuccinate (available as Mackaderm ASTO-Dry from Rhodia, Inc., and Dry-Flo PC from AkzoNobel), calcium starch octenylsuccinate (available as Skin Flow C from MGP Ingredients, Inc., and Mackaderm CSTO-Dry from Rhodia, Inc.), and polymethylsilsesquioxane coated tapioca starch (available as Dry-Flo TS from AkzoNobel).
  • starch particles suitable for use herein are selected from the group consisting of coated starch, uncoated starch, non crosslinked starch such as tapioca starch (available as Tapioca Pure from AkzoNobel) and polymethylsilsesquioxane coated tapioca starch (available as Dry-Flo TS from AkzoNobel).
  • starch particles are non-crosslinked starch particles.
  • the composition of the present invention is a composition or an emulsion having viscosity at 25°C of about 100,000cP to about 2,000,000cP, more preferably from about 200,000cP to about i.OOO.OOOcP. Viscosity is determined by a Brookfield RVT, at 5 RPM using Spindle T-E.
  • composition of the present invention may include one or more additional thickening agents.
  • the composition of the present invention may comprise from about 0.1% to about 5%, or, alternatively, from about 0.2% to about 2%, of a thickening agent when present.
  • Suitable classes of thickening agents include but are not limited to carboxylic acid polymers, polyacrylamide polymers, sulfonated polymers, copolymers thereof, hydrophobically modified derivatives thereof, gums, celluloses, and mixtures thereof.
  • Suitable thickening agents include carboxylic acid polymers such as the carbomers (e.g., the carbomers (e.g., the carbomers).
  • CARBOPOL ® 900 series such as CARBOPOL ® 954).
  • Other suitable carboxylic acid polymeric agents include copolymers of C 10-30 alkyl acrylates with one or more monomers of acrylic acid, methacrylic acid, or one of their short chain (i.e. , Ci_ 4 alcohol) esters, wherein the crosslinking agent is an allyl ether of sucrose or pentaerytritol.
  • These copolymers are known as acrylates/C 10-30 alkyl acrylate crosspolymers and are commercially available as CARBOPOL ® 1342, CARBOPOL ® 1382, PEMULEN TR-1, and PEMULEN TR-2, from Noveon, Inc.
  • suitable thickening agents include the polyacrylamide polymers and copolymers.
  • An exemplary polyacrylamide polymer has the CTFA designation "polyacrylamide and isoparaffin and laureth-7" and is available under the trade name SEPIGEL 305 from Seppic Corporation (Fairfield, N.J.).
  • Other polyacrylamide polymers useful herein include multi-block copolymers of acrylamides and substituted acrylamides with acrylic acids and substituted acrylic acids. Commercially available examples of these multi-block copolymers include HYPAN SR150H, SS500V, SS500 W, SSSA100H, from Lipo Chemicals, Inc., (Patterson, N.J.).
  • sulfonated polymers such as the CTFA designated sodium polyacryloyldimethyl taurate available under the trade name Simulgel 800 from Seppic Corp. and Viscolam At 100 P available from Lamberti S.p.A. (Gallarate, Italy).
  • CTFA sodium polyacryloyldimethyl taurate
  • Viscolam At 100 P available from Lamberti S.p.A. (Gallarate, Italy).
  • Sepiplus 400 available from Seppic Corp.
  • Gums include acacia, agar, algin, alginic acid, ammonium alginate, amylopectin, calcium alginate, calcium carrageenan, carnitine, carrageenan, dextrin, gelatin, gellan gum, guar gum, guar hydroxypropyltrimonium chloride, hectorite, hyaluroinic acid, hydrated silica, hydroxypropyl chitosan, hydroxypropyl guar, karaya gum, kelp, locust bean gum, natto gum, potassium alginate, potassium carrageenan, propylene glycol alginate, sclerotium gum, sodium carboxymethyl dextran, sodium carrageenan, tragacanth gum, xanthan gum, derivatives thereof and mixtures thereof.
  • Natural gums are polysaccharides of natural origin, capable of causing a large viscosity increase in solution, even at small concentrations. They can be used as thickening agents, gelling agents, emulsifying agents, and stabilizers. Most often these gums are found in the woody elements of plants or in seed coatings. Natural gums can be classified according to their origin. They can also be classified as uncharged or ionic polymers (polyelectrolytes), examples of which include the following. Natural gums obtained from seaweeds, such as: agar; alginic acid; sodium alginate; and carrageenan.
  • Natural gums obtained from non-marine botanical resources include: gum arabic, from the sap of Acacia trees; gum ghatti, from the sap of Anogeissus trees; gum tragacanth, from the sap of Astragalus shrubs; karaya gum, from the sap of Sterculia trees.
  • uncharged gums examples include: guar gum, from guar beans, locust bean gum, from the seeds of the carob tree; beta-glucan, from oat or barley bran; chicle gum, an older base for chewing gum obtained from the chicle tree; dammar gum, from the sap of Dipterocarpaceae trees; glucomannan from the konjac plant; mastic gum, a chewing gum from ancient Greece obtained from the mastic tree; psyllium seed husks, from the Plantago plant; spruce gum, a chewing gum of American Indians obtained from spruce trees; tara gum, from the seeds of the tara tree.
  • Natural gums produced by bacterial fermentation include gellan gum and xanthan gum.
  • Suitable thickening agents include cellulose and modified cellulosic compositions such as, carboxymethyl hydroxyethylcellulose, cellulose acetate propionate carboxylate, hydroxyethylcellulose, hydroxyethyl ethylcellulose, hydroxypropylcellulose, hydroxypropyl methylcellulose, methyl hydroxyethylcellulose, microcrystalline cellulose, sodium cellulose sulfate, and mixtures thereof. Also useful herein are the alkyl substituted celluloses.
  • hydroxy groups of the cellulose polymer are hydroyxalkylated (preferably hydroxyethylated or hydroxypropylated) to form a hydroxyalkylated cellulose which is then further modified with a Cio -C 30 straight chain or branched chain alkyl group through an ether linkage.
  • these polymers are ethers of Cio -C 30 straight or branched chain alcohols with hydroxyalkylcelluloses.
  • alkyl groups useful herein include those selected from the group consisting of stearyl, isostearyl, lauryl, myristyl, cetyl, isocetyl, cocoyl (i.e.
  • alkyl groups derived from the alcohols of coconut oil palmityl, oleyl, linoleyl, linolenyl, ricinoleyl, behenyl, and mixtures thereof.
  • Preferred among the alkyl hydroxyalkyl cellulose ethers is the material given the CTFA designation cetyl hydroxyethylcellulose, which is the ether of cetyl alcohol and hydroxyethylcellulose. This material is sold under the tradename Natrosol® CS Plus from Aqualon Corporation.
  • Emulsifiers The compositions of this invention may comprise an emulsifier.
  • An emulsifier is particularly suitable when the phase is in the form of an emulsion or if immiscible materials are being combined.
  • the composition may comprise from about 0.01%, 0.05%, or 0.1% to about 10%, 5%, or 2% emulsifier, and/or from about 0.01% to about 5%, and/or from about 0.05% to about 2%, and/or from about 0.1% to about 0.5%, emulsifier.
  • Emulsifiers may be nonionic, anionic or cationic, preferably nonionic. Non-limiting examples of emulsifiers are disclosed in U.S. Patent 3,755,560, U.S.
  • Other suitable emulsifiers are further described in the Personal Care Product Council's International Cosmetic Ingredient Dictionary and Handbook, Thirteenth Edition, 2006, under the functional category of "Surfactants - Emulsifying Agents.”
  • Suitable emulsifiers include the following classes of ethers and esters: ethers of polyglycols and of fatty alcohols, esters of polyglycols and of fatty acids, ethers of polyglycols and of fatty alcohols which are glycosylated, esters of polyglycols and of fatty acids which are glycosylated, ethers of C 12-30 alcohols and of glycerol or of polyglycerol, esters of C 12-30 fatty acids and of glycerol or of polyglycerol, ethers of oxyalkylene-modified C 12-30 alcohols and of glycerol or polyglycerol, ethers of C 12-30 fatty alcohols comprising and of sucrose or of glucose, esters of sucrose and of C12-30 fatty acids, esters of pentaerythritol and of C12-30 fatty acids, esters of sorbitol and/or of sorbitan and of C12-30 fatty acids,
  • the emulsifier is selected from a group consisting of ethers of glycerol, polyglycerol, sucrose, glucose, or sorbitol; esters of glycerol, polyglycerol, sucrose, glucose, or sorbitol; and mixtures thereof.
  • Silicone emulsifiers may be used. Linear or branched type silicone emulsifiers may also be used. Particularly useful silicone emulsifiers include polyether modified silicones such as KF-6011, KF-6012, KF-6013, KF-6015, KF-6015, KF-6017, KF-6043, KF-6028, and KF-6038 and polyglycerolated linear or branched siloxane emulsifiers such as KF-6100, KF-6104, and KF-6105; all from Shin Etsu.
  • polyether modified silicones such as KF-6011, KF-6012, KF-6013, KF-6015, KF-6015, KF-6017, KF-6043, KF-6028, and KF-6038
  • polyglycerolated linear or branched siloxane emulsifiers such as KF-6100, KF-6104, and KF-6105; all from Shin Etsu.
  • compositions of the present invention may comprise at least one additional skin care active.
  • Many skin care actives may provide more than one benefit, or operate via more than one mode of action; therefore, classifications herein are made for the sake of convenience and are not intended to limit the active to that particular application or applications listed.
  • compositions of this invention may comprise a UV active.
  • UV active includes both sunscreen agents and physical sunblocks. Suitable UV actives may be organic or inorganic. Suitable UV actives are listed in the functional category of "Sunscreen Agents" in the Personal Care Product Council's International Cosmetic Ingredient Dictionary and Handbook, Thirteenth Edition, 2010.
  • the composition may comprise from may comprise an amount of UV active prescribed or proposed by regulatory agencies in the US (e.g., 21 CFR part 352, 68 Federal Register 41386, 70 Federal Register 72449, or 71 Federal Register 42405), Europe (Regulation No 1223/2009 of the EU Parliament; Annex VI ), Japan, China, Australia, New Zealand, or Canada.
  • the composition comprises from about 1%, 2%, or 3% to about 40%, 30%, or 20%, by weight of the composition, UV active.
  • the composition may comprise a sufficient about of UV active to yield a Sun Protection Factor of at least about 15, 30 45, or 50.
  • SPF testing is conventional and well understood in the art. A suitable SPF test is prescribed in 21 C.F.R. 352, Subpart D.
  • Suitable UV actives include dibenzoylmethane derivatives including 2- methyldibenzoylmethane, 4-methyldibenzoylmethane, 4-isopropyldibenzoylmethane, 4-tert- butyldibenzoylmethane, 2,4- dimethyldibenzoylmethane, 2,5- dimethyldibenzoylmethane, 4,4'- diisopropyldibenzoylmethane, 4,4'-dimethoxy dibenzoylmethane, 4-tert-butyl-4'-methoxy dibenzoylmethane ⁇ i.e., butyl methoxydibenzoylmethane or avobenzone) (commercially available as PARSOL ® 1789 from DSM), 2-methyl-5-isopropyl-4'-methoxy dibenzoylmethane, 2-methyl-5-tert- butyl-4'-methoxydibenzoyl
  • UV actives include 2-ethylhexyl-p- methoxycinnamate (commercially available as PARSOL ® MCX from DSM), 2-hydroxy-4- methoxybenzophenone, benzonphenone-3 (i.e.
  • octyldimethyl-p-aminobenzoic acid digalloyltrioleate, 2,2-dihydroxy-4-methoxybenzophenone, ethyl-4-(bis(hydroxy- propyl))aminobenzoate, 2-ethylhexyl-2-cyano-3,3-diphenylacrylate, 2-ethylhexyl salicylate, homomenthyl salicylate, glyceryl -p-aminobenzoate, 3,3,5-tri-methylcyclohexylsalicylate, methylanthranilate, p-dimethyl-aminobenzoic acid or aminobenzoate, 2-ethylhexyl-p-dimethyl- amino-benzoate, 2-phenylbenzimidazole-5-sulfonic acid, 2-(p-dimethylaminophenyl)-5- sulfonicbenzoxazoic acid, octo
  • UV actives include 4-methylbenzylidene camphor (commercially available as PARSOL ® 5000 from DSM or Eusolex 6300 from Merck), methylene bis-benzotriazolyl tetramethylbutylphenol (i.e., bisoctrizole, commercially available as Tinosorb ® M from BASF), bis- ethylhexyloxyphenol methoxyphenol triazine (i.e., bemotrizinol,commercially available as Tinosorb ® S from BASF), disodium phenyl dibenzimidazole tetrasulfonate (i.e., Bisdisulizole disodium, commercially available as Neo Heliopan ® AP from Symrise), ethylhexyl triazone (commercially available as Uvinul ® T 150 from BASF), drometrizole trisiloxane (marketed as Mexoryl XL by L'Oreal), sodium dihydroxy dimethoxy disul
  • the UV actives of the present invention may be encapsulated.
  • examples of commercially available encapsulated sunscreen actives include, but are not limited to: Eusolex UV-Pearls 2292 (Merck / EMD Chemicals), which includes water, ethylhexyl methoxycinnamate, silica, phenoxyethanol, PVP, chlorphenesin, disodium EDTA, and BHT; Silasoma ME (Seiwa Kasei Co., Ltd), which includes water, polysilicone-14, and ethylhexyl methoxycinnamate; Silasoma MEA (Seiwa Kasei Co., Ltd), which includes water, polysilicone-14, ethylhexyl methoxycinnamate, and butyl methoxydibenzoylmethane; Silasoma MEP(S) (Seiwa Kasei Co., Ltd), which includes water, ethylhexy
  • compositions of the present invention may comprise from about 0.0001% to about 50%, alternatively from about 0.001% to about 10%, and alternatively from about 0.01% to about 5%, of one or more vitamins.
  • vitamins means vitamins, pro-vitamins, and their salts, isomers and derivatives.
  • Non-limiting examples of suitable vitamins include: vitamin B compounds (including B l compounds, B2 compounds, B3 compounds such as niacinamide, niacinnicotinic acid, tocopheryl nicotinate, C1-C18 nicotinic acid esters, and nicotinyl alcohol; B5 compounds, such as panthenol or "pro-B5", pantothenic acid, pantothenyl; B6 compounds, such as pyroxidine, pyridoxal, pyridoxamine; carnitine, thiamine, riboflavin); vitamin A compounds, and all natural and/or synthetic analogs of Vitamin A, including retinoids, retinol, retinyl acetate, retinyl palmitate, retinoic acid, retinaldehyde, retinyl propionate, carotenoids (pro-vitamin A), and other compounds which possess the biological activity of Vitamin A; vitamin D compounds; vitamin K compounds; vitamin E compounds,
  • the composition comprises a vitamin selected from the group consisting of vitamin B compounds, vitamin C compounds, vitamin E compounds and mixtures thereof.
  • the vitamin is selected from the group consisting of niacinamide, tocopheryl nicotinate, pyroxidine, panthenol, vitamin E, vitamin E acetate, ascorbyl phosphates, ascorbyl glucoside, and mixtures thereof.
  • compositions of the present invention may comprise one or more peptides.
  • peptide refers to peptides containing ten or fewer amino acids, their derivatives, isomers, and complexes with other species such as metal ions (for example, copper, zinc, manganese, and magnesium).
  • metal ions for example, copper, zinc, manganese, and magnesium.
  • peptide refers to both naturally occurring and synthesized peptides.
  • the peptides are di-, tri-, tetra-, penta-, and hexa-peptides, their salts, isomers, derivatives, and mixtures thereof.
  • useful peptide derivatives include, but are not limited to, peptides derived from soy proteins, carnosine (beta-alanine-histidine), palmitoyl-lysine- threonine (pal-KT) and palmitoyl-lysine-threonine-threonine-lysine-serine (pal-KTTKS, available in a composition known as MATRIXYL ® ), palmitoyl-glycine-glutamine-proline-arginine (pal-GQPR, available in a composition known as RIGIN ® ), these three being available from Sederma, France, acetyl-glutamate-glutamate-methionine-glutamine-arginine-arginine (Ac-EEMQRR; Argireline®), and Cu-histidine-glycine-glycine (Cu-HGG, also known as IAMIN ® ).
  • compositions may comprise from about 1x10 " % to about 20%, alternatively from about lxl0 "6 % to about 10%, and alternatively from about lxl0 "5 % to about 5% of the peptide.
  • Sugar Amines
  • compositions of the present invention may comprise a sugar amine, also known as amino sugars, and their salts, isomers, tautomers and derivatives.
  • Sugar amines can be synthetic or natural in origin and can be used as pure compounds or as mixtures of compounds (e.g., extracts from natural sources or mixtures of synthetic materials).
  • glucosamine is generally found in many shellfish and can also be derived from fungal sources.
  • Sugar amine compounds useful in the present invention include, for example, N-acetyl-glucosamine, and also those described in PCT Publication WO 02/076423 and U.S. Patent No. 6,159,485, issued to Yu, et al.
  • the composition comprises from about 0.01% to about 15%, alternatively from about 0.1% to about 10%, and alternatively from about 0.5% to about 5%, of the sugar amine.
  • compositions of the present invention further may comprise non-vitamin antioxidants and radical scavengers, hair growth regulators, flavonoids, minerals, preservatives, phytosterols and/or plant hormones, protease inhibitors, tyrosinase inhibitors, anti-inflammatory agents and N- acyl amino acid compounds.
  • Suitable non-vitamin antioxidants and radical scavengers include, but are not limited to, BHT (butylated hydroxy toluene), L-ergothioneine (available as THIOTANETM); tetrahydrocurcumin, cetyl pyridinium chloride, carnosine, diethylhexyl syrinylidene malonate (available as OXYNEXTM), hexadec-8-ene-l,16-dicarboxylic acid (octadecene dioic acid; ARLATONETM Dioic DCA from Uniqema), ubiquinone (co-enzyme Q10), tea extracts including green tea extract, yeast extracts or yeast culture fluid (e.g., Pitera®), and combinations thereof.
  • BHT butylated hydroxy toluene
  • L-ergothioneine available as THIOTANETM
  • tetrahydrocurcumin cetyl pyridin
  • Suitable hair growth regulators include, but are not limited to, hexamidine, butylated hydroxytoluene (BHT), hexanediol, panthenol and pantothenic acid derivates, their isomers, salts and derivatives, and mixtures thereof.
  • BHT butylated hydroxytoluene
  • Suitable minerals include zinc, manganese, magnesium, copper, iron, selenium and other mineral supplements. "Mineral” is understood to include minerals in various oxidation states, mineral complexes, salts, derivatives, and combinations thereof.
  • Suitable examples of plant sterols (phytosterols) and/or plant hormones include, but are not limited to, sitosterol, stigmasterol, campesterol, brassicasterol, kinetin, zeatin, and mixtures thereof.
  • Suitable protease inhibitors include, but are not limited to, hexamidine, vanillin acetate, menthyl anthranilate, soybean trypsin inhibitor, Bowman-Birk inhibitor, and mixtures thereof.
  • Suitable tyrosinase inhibitors include, but are not limited to, sinablanca (mustard seed extract), tetrahydrocurcumin, cetyl pyridinium chloride, and mixtures thereof.
  • Suitable anti-inflammatory agents include, but are not limited to, glycyrrhizic acid (also known as glycyrrhizin, glycyrrhixinic acid, and glycyrrhetinic acid glycoside), glycyrrhetenic acid, other licorice extracts, and combinations thereof.
  • glycyrrhizic acid also known as glycyrrhizin, glycyrrhixinic acid, and glycyrrhetinic acid glycoside
  • glycyrrhetenic acid other licorice extracts, and combinations thereof.
  • Suitable N-acyl amino acid compounds include, but are not limited to, N-acyl phenylalanine, N-acyl tyrosine, their isomers, including their D and L isomers, salts, derivatives, and mixtures thereof.
  • An example of a suitable N-acyl amino acid is N-undecylenoyl-L-phenylalanine is commercially available under the tradename SEPIWHITE® from Seppic (France).
  • Other useful skin care actives include moisturizing and/or conditioning agents, such as glycerol, petrolatum, caffeine, and urea; yeast extracts (for example, PiteraTM); dehydroepiandrosterone (DHEA), its analogs and derivatives; exfoliating agents, including alpha- and beta-hydroxyacids, alpha-keto acids, glycolic acid and octanoyl salicylate; antimicrobial agents; antidandruff agents such as piroctone olamine, 3,4,4'-trichlorocarbanilide (trichlosan), triclocarban and zinc pyrithione; dimethyl aminoethanol (DMAE); creatine; skin lightening agents such as kojic acid, mulberry extract, hydroquinone, arbutin, and deoxy-arbutin; (sunless) tanning agents, such as dihydroxy acetone (DHA); isomers, salts, and derivatives of any of the foregoing; and mixtures thereof.
  • compositions of the present invention may include one or more humectants.
  • the composition of the present invention may comprise from about 1% to about 30%; alternatively, from about 2% to about 20%; or, alternately, from about 3% to about 15% of the humectant, when present.
  • An exemplary class of humectants is polyhydric alcohols.
  • Suitable polyhydric alcohols include polyalkylene glycols and alkylene polyols and their derivatives, including propylene glycol, dipropylene glycol, polypropylene glycol, polyethylene glycol and derivatives thereof; sorbitol; hydroxypropyl sorbitol; erythritol; threitol; pentaerythritol; xylitol; glucitol; mannitol; hexylene glycol; butylene glycol (e.g. , 1,3-butylene glycol); pentylene glycol; hexane triol (e.g. , 1,2,6- hexanetriol); glycerine; ethoxylated glycerine; and propoxylated glycerine.
  • propylene glycol dipropylene glycol, polypropylene glycol, polyethylene glycol and derivatives thereof
  • sorbitol hydroxypropyl sorbito
  • humectants include sodium 2-pyrrolidone-5-carboxylate, guanidine; glycolic acid and glycolate salts (e.g. , ammonium and quaternary alkyl ammonium); lactic acid and lactate salts (e.g. , ammonium and quaternary alkyl ammonium); aloe vera in any of its variety of forms (e.g.
  • aloe vera gel aloe vera gel
  • hyaluronic acid and derivatives thereof e.g., salt derivatives such as sodium hyaluronate
  • lactamide monoethanolamine acetamide monoethanolamine
  • urea panthenol
  • sodium pyroglutamate NaPCA
  • water-soluble glyceryl poly(meth)acrylate lubricants such as Hispagel ®
  • mixtures thereof e.g., aloe vera gel
  • Colorants e.g., aloe vera gel
  • hyaluronic acid and derivatives thereof e.g., salt derivatives such as sodium hyaluronate
  • lactamide monoethanolamine acetamide monoethanolamine
  • urea panthenol
  • sodium pyroglutamate NaPCA
  • water-soluble glyceryl poly(meth)acrylate lubricants such as Hispagel ®
  • composition of the present invention may comprise from about 0.00001% to about 25%, and alternatively from about 0.01% to about 10%, of a colorant.
  • suitable colorants include, but are not limited to organic and/or inorganic pigments, natural and/or synthetic dyes, lakes, including FD&C and/or D&C lakes and blends, and mixtures of any of the foregoing.
  • Non-limiting examples of suitable colorants include iron oxides, ferric ammonium ferrocyanide, manganese violet, ultramarine blue, and chromium oxide, phthalocyanine blue and green pigment, encapsulated dyes, inorganic white pigments, for example Ti0 2 , ZnO, or Zr0 2 , FD&C dyes, D&C dyes, and mixtures thereof.
  • Oil control agents may comprise one or more compounds useful for regulating the production of skin oil, or sebum, and for improving the appearance of oily skin.
  • suitable oil control agents include salicylic acid, dehydroacetic acid, benzoyl peroxide, vitamin B3 compounds (for example, niacinamide or tocopheryl nicotinate), their isomers, esters, salts and derivatives, and mixtures thereof.
  • the compositions may comprise from about 0.0001% to about 15%, alternatively from about 0.01% to about 10%, alternatively from about 0.1% to about 5%, and alternatively from about 0.2% to about 2%, of an oil control agent. Examples
  • compositions according to the present invention are prepared by first combining the water phase ingredients and heating to 80°C while mixing. Next, the oil phase ingredients are separately combined and heated to 80°C while mixing. The oil phase is then added to the water phase and the resulting emulsion is milled using a rotor stator mill. The thickener phase is next prepared by mixing the ingredients, and this thickener phase is then added to the emulsion and the emulsion is cooled while mixing. When the composition reaches 55°C the remaining ingredients are added and the composition is mixed until uniform while maintaining the composition at 55°C. The composition is then poured into suitable containers.
  • Example 4 Tapioca starch and polymethylsilsesquioxane, from Akzo Nobel
  • Example 1 contains 10% Dry Flo TS, a tapioca starch coated with polymethylsilsesquioxane from Akzo Nobel, in place of 10% of the water in Comparative Example A.
  • Example 1 contains 10% Dry Flo TS, a tapioca starch coated with polymethylsilsesquioxane from Akzo Nobel, in place of 10% of the water in Comparative Example A.
  • 0.1 grams of a product was applied to the volar forearm and various rub-in and after feel attributes such as consistency, spreading, absorption, stickiness, smoothness and coating level were assessed by a panel of 2 sensory experts.

Abstract

L'invention concerne une composition de soins de la peau qui contient un mélange de phase huileuse et une phase aqueuse. Dans la composition, le mélange de phase huileuse comprend entre environ 5% et environ 30% en poids d'un matériau de cire et éventuellement entre environ 1% et environ 20% en poids d'une huile qui est liquide à température ambiante. Le mélange de phase huileuse présente un point de fusion d'environ 25°C à environ 50°C. Dans la composition, la phase aqueuse comprend entre environ 0,1% et environ 5% en poids d'un polymère superabsorbant et entre environ 20% et environ 85% en poids d'eau. La composition de l'invention comprend également entre environ 6% et environ 30% en poids d'un matériau particulaire choisi dans le groupe constitué de particules d'amidon, de particules d'élastomère de silicone et de leurs combinaisons.
PCT/US2016/039934 2015-06-29 2016-06-29 Polymères superabsorbants et poudres d'amidon utilisables dans des compositions de soins de la peau WO2017004108A1 (fr)

Priority Applications (5)

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JP2017567085A JP6604637B2 (ja) 2015-06-29 2016-06-29 スキンケア組成物において使用するための超吸収性ポリマー及びデンプン粉末
EP16736726.7A EP3313534A1 (fr) 2015-06-29 2016-06-29 Polymères superabsorbants et poudres d'amidon utilisables dans des compositions de soins de la peau
CN201680036787.4A CN107787222B (zh) 2015-06-29 2016-06-29 用于护肤组合物中的超吸收聚合物和淀粉粉末
CA2988808A CA2988808C (fr) 2015-06-29 2016-06-29 Polymeres, cires, huiles et poudres d'amidon superabsorbants destines aux compositions de soins de la peau
KR1020177036476A KR102043535B1 (ko) 2015-06-29 2016-06-29 피부 케어 조성물에서 사용하기 위한 초흡수성 중합체 및 전분 분말

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US201562186199P 2015-06-29 2015-06-29
US62/186,199 2015-06-29

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CA2988808C (fr) 2021-05-25
US20160374933A1 (en) 2016-12-29
US10285926B2 (en) 2019-05-14
CA2988808A1 (fr) 2017-01-05
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EP3313534A1 (fr) 2018-05-02
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